OUTLINE: This is a multicenter study. Patients are stratified according to disease (refractory vs sensitive). Patients receive BBR 3464 IV over 1 hour on day 1. Treatment repeats every 21 days for at least 3 courses in the absence of disease progression or unacceptable toxicity. Patients with complete or partial response or stable disease may receive up to 6 courses of therapy. Patients without progressive disease after 6 courses may continue treatment at the investigator's discretion. Patients are followed every 9 weeks for 3 years.